Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 110,530	$ (13,480)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	11,949	23,068
Amortization and write-off of debt issuance costs	1,586	1,004
Loss on disposal/classification of held for sale for discontinued operations	0	39,096
Tangible asset impairment charge	156	6,416
Gain on sale of assets	(75,001)	(1,123)
Gain from insurance settlement related to investing activities	(1,059)	0
Equity-based incentive compensation	618	816
Changes in assets and liabilities:
Decrease in accounts receivable	14,265	6,461
Decrease in receivables from related parties	138	603
Decrease in other current assets	2,318	4,094
Decrease in other non-current assets	1,417	2,324
Decrease in accounts payable	(311)	(557)
Increase (decrease) in payables to related parties	1	(1,792)
Increase (decrease) in accrued interest payable	305	(19)
Decrease in accrued property taxes	(612)	(671)
Decrease in unearned revenue	(471)	(1,618)
Increase (decrease) in accrued payroll	(1,649)	1,617
Decrease in other accrued liabilities	(1,718)	(2,223)
Net cash provided by operating activities	49,329	61,167
Cash flows from investing activities:
Acquisition of DEVCO from Ergon (Note 12)	0	(12,221)
Capital expenditures	(8,429)	(16,332)
Proceeds from sale of assets	155,249	5,896
Proceeds from insurance settlement related to investing activities	1,059	0
Net cash provided by (used in) investing activities	147,879	(22,657)
Cash flows from financing activities:
Payments on other financing activities	(1,384)	(3,027)
Debt issuance costs	(575)	0
Borrowings under credit agreement	98,486	228,000
Payments under credit agreement	(256,000)	(231,000)
Repurchase of Preferred Units	(5,407)	0
Proceeds from equity issuance	154	170
Distributions	(32,115)	(32,406)
Net cash used in financing activities	(196,841)	(38,263)
Net increase in cash and cash equivalents	367	247
Cash and cash equivalents at beginning of period	805	558
Cash and cash equivalents at end of period	1,172	805
Supplemental disclosure of non-cash financing and investing cash flow information:
Non-cash changes in property, plant and equipment	2,765	(259)
Increase in accrued liabilities related to insurance premium financing agreement	1,208	2,324
Cash paid for interest, net of amounts capitalized	4,098	10,009
Cash paid for income taxes	37	30
Third Party [Member]
Changes in assets and liabilities:
Increase (decrease) in accrued crude oil purchases	(3,868)	(2,838)
Related Party [Member]
Changes in assets and liabilities:
Increase (decrease) in accrued crude oil purchases	(8,842)	(2,965)
Decrease in unearned revenue	$ (423)	$ 2,954